Ok, after some tests this is what seems to happen: The test suite works with 3th generation AMD EPYC processorss, but fails with 4th generation.
What you can do is to install the package in testing and do mlucas -fftlen 1024 -radset 4 -f 24 -iters 1000 mlucas -s m mlucas -fftlen 192 -iters 100 -radset 0
Thanks for the hint! I confirm that the second line (mlucas -s m) makes the SEGV to show. I think this (a test suite which segfaults) should never happen, so I would just disable the offending line (not the whole test suite). Thanks.
